The 28 Best Whistling Songs of All-Time

had already released a pair of marginally-successful albums and were even beginning to gain a small amount of notoriety as being one of Sweden's most promising young pop bands by the time 2006 rolled around. But it was their third album,

Writer's Block

, that

really

put them on the forefront of indie-pop stateside, thanks almost entirely to the infectious single "Young Folks."

And, to think, it might not have been: According to All Music Guide, that contagious little whistle part was originally just a placeholder until the band could get around to replacing it with an instrument. One has to think the song just wouldn't have been the international earworm it ultimately became had they decided not to leave it in.

We couldn't go anywhere the summer of 2007 without somebody bringing up "that whistling song" to us, and, 100 percent of the time, they were talking about "Young Folks."

After several more popular albums with equally catchy hooks, the band has become a bit of a household name, but "Young Folks" has remained by-and-large their most popular song. Not only did it revolutionize the band's career, but we'll also contend that it did the very same for the act of whistling itself.